1223606 has 4 divisors (see below), whose sum is σ = 1835412. Its totient is φ = 611802.

The previous prime is 1223603. The next prime is 1223633. The reversal of 1223606 is 6063221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305900 + ... + 305903.

It is an arithmetic number, because the mean of its divisors is an integer number (458853).

2^1223606 is an apocalyptic number.

1223606 is a deficient number, since it is larger than the sum of its proper divisors (611806).

1223606 is an equidigital number, since it uses as much as digits as its factorization.

1223606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611805.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1223606 is about 1106.1672567926. The cubic root of 1223606 is about 106.9581459154.

Adding to 1223606 its reverse (6063221), we get a palindrome (7286827).

The spelling of 1223606 in words is "one million, two hundred twenty-three thousand, six hundred six".